Problems with matlab labview interface

Question

I wrote a code to check the interface of Matlab and LabView. I am reading a matrix from a file and created two 1D subarrays using index array out of it. I am passing the subarray as input in the matlab script to calculate its length. With subarray 2 in the vi I am getting the result I expect. When I choose the subarray 1  as input to the Matab script, LabView crashes.
Is there any problem with my code?
 

Answer 1

There is no need to host files somewhere else.  Feel free to upload them to the forums and attach them to your post.
Minor comments first.  Why are you re-reading your config file every 2 seconds?  Do you expect it to change?  If not then read it once and don't read it again.
I think it would be best if you stopped when an error occured, you can do this by wiring an error to the Or going into the stop condition, or use the compound arithmatic with Or.
But I think the major issue you have is that your Arduino reference can be wipped out if you do things wrong.  If your equal comparision is false you go to the false case, where you aren't passing the arduino reference.  So when you go to close you won't close your reference, and your hardware will still be open, and trying to run again will result in an error.  Similarly if your for loop runs for 0 iterations your reference is lost.  Attached is an updated version which has some of these changes.
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Attachments:
Prueba 1 Hooovahh Edit2.vi ‏765 KB